94 
ERYTHEMA. 
724. E. Centaurium, Pers. Native. British. 
724c. E. pulchella, Fries. Native. English. 
Vide Flora, 142. Probably specifically distinct from the preceding. 
CHLORA. 
725. C. perfoliata, Linn. Native. English. 
* VILLARSIA. 
726. Y. nymphjeoides, Vent. Alien. 
MENYANTHES. 
727. M. trifoliata, Linn. Native. British. 
POLEMONIUM. 
728. P. ccertjleum, Linn. Native. Local. 
Truly native in the Craven localities. Probably introduced in the 
other station; also in a plantation near the West Fields, Richmond 
— J. Ward; and in the hedges at Pouter Carr, near Topcliffe, where 
it grows in considerable abundance. 
COLLOMIA. 
C. grandiflora, Douglas. Alien. 
In the autumn of 1852 my friend W. Foggitt and I collected several 
specimens of this native of north-western America, in a barley 
field behind Thirsk church (vide Phyt. iii. 760). 
ORDER LI. CONVOLVULACEiE. 
CONVOLVULUS. 
729. C. arvensis, Linn. 
Native. 
British. 
730. C. sepitjm, Linn. 
Native. 
English. 
CUSCUTA. 
732. C. europjea, Linn. 
Native. 
English. 
In a field near Little Ouseburn — J. Cramond. Fields at Bening- 
borough, 1849 — 0. A. Moore. 
